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Finding the Fourth Proportional to 490,497.92, 676,865.28 and 286,567.76

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Solution

The fourth proportional to 490,497.92, 676,865.28 and 286,567.76 is: 395,450.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,497.92 : 676,865.28 = 286,567.76 : x
  2. Step 2: Convert to fraction form
    490,497.92/676,865.28 = 286,567.76/x
  3. Step 3: Cross multiply
    490,497.92x = 676,865.28 × 286,567.76
  4. Step 4: Simplify right side
    490,497.92x = 193,967,767,111.37
  5. Step 5: Solve for x
    x = 193,967,767,111.37/490,497.92
  6. Step 6: Final answer
    x = 395,450.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.